Bg 6.38

kaccin nobhaya-vibhrastas
chinnabhram iva nasyati
apratistho maha-baho
vimudho brahmanah pathi

Word for word: 
kaccit — whether; na — not; ubhaya — both; vibhrastah — deviated from; chinna — torn; abhram — cloud; iva — like; nasyati — perishes; apratisthah — without any position; maha-baho — O mighty-armed Krishna; vimudhah — bewildered; brahmanah — of transcendence; pathi — on the path.

Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
O mighty-armed Krishna, does not such a man, who is bewildered from the path of transcendence, fall away from both spiritual and material success and perish like a riven cloud, with no position in any sphere?

Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
There are two ways to progress. Those who are materialists have no interest in transcendence; therefore they are more interested in material advancement by economic development, or in promotion to the higher planets by appropriate work. When one takes to the path of transcendence, one has to cease all material activities and sacrifice all forms of so-called material happiness. If the aspiring transcendentalist fails, then he apparently loses both ways; in other words, he can enjoy neither material happiness nor spiritual success. He has no position; he is like a riven cloud. A cloud in the sky sometimes deviates from a small cloud and joins a big one. But if it cannot join a big one, then it is blown away by the wind and becomes a nonentity in the vast sky. The brahmanah pathi is the path of transcendental realization through knowing oneself to be spiritual in essence, part and parcel of the Supreme Lord, who is manifested as Brahman, Paramatma and Bhagavan. Lord Sri Krishna is the fullest manifestation of the Supreme Absolute Truth, and therefore one who is surrendered to the Supreme Person is a successful transcendentalist. To reach this goal of life through Brahman and Paramatma realization takes many, many births (bahunam janmanam ante). Therefore the supermost path of transcendental realization is bhakti-yoga, or Krishna consciousness, the direct method.